The Mince Pie Puzzle

1. The Mince Pie Puzzle

Today Jilly asked in what year did Grandma last eat a whole box of six mince pies to herself. Her mother guessed 2007, and her father guessed 1986. Grandma told Jilly that mother had one digit in the correct place, one digit correct but in the wrong place, and two incorrect digits. She said that father had fared only a little better with two correctly placed digits and two incorrect digits. In what year did Grandma last eat a whole box of six mince pies to herself? Answers below. Solution on 24.12.24

Best NOT to look at other answers before you solve it!

2. The Stiff Padlock

(a) 2845 has two digits correct in the wrong place.
(b) 7263 has two digits correct in the wrong place.
(c) 6134 has one digit correct in the right place.
(d) 9048 has two digits correct in the wrong place.
You also know that the sum of the 4 digits on this padlock is even.
Unlock me!